Curtain tieback



FIG. 1 is a front, right, and top perspective view of a curtain tieback, showing my design.

FIG. 2 is a front elevation view thereof.

FIG. 3 is a rear elevation view thereof.

FIG. 4 is a left side elevation view thereof.

FIG. 5 is a right side elevation view thereof.

FIG. 6 is a top plan view thereof.

FIG. 7 is a bottom plan view thereof.

FIG. 8 is an enlarged view of the area labeled “8” in FIG. 2;

FIG. 9 is another front, right, and top perspective view of the curtain tieback of FIG. 1, wherein the curtain tieback is in an expanded state; and,

FIG. 10 is an enlarged view of the area labeled “10” in FIG. 9.

The broken lines shown in the drawings are included for the purpose of illustrating portions of the curtain tieback that form no part of the claimed design. 

CLAIM The ornamental design for a curtain tieback, as shown and described. 